Tie tarps over your truck bed or trailer or secure a load without a cover with the ABN Black Bungee Cord Assortment. These straps are resistant to UV degradation and have strong holding power and elastic retention. The synthetic rubber stretches for a good fit, and the non-crimped S-hooks attach to a tarp and an anchor point on your truck or trailer. Attach one S-hook to the grommet on a tarp and anchor the other S-hook to your truck bed or trailer or wrap around either side of an item to keep it secure. Since tie down straps come in fixed lengths, it is helpful to measure the distance you need to cover and use a cord that is slightly shorter than your measurement. This package includes (3) 15-inch, (4) 21-inch, and (2) 31-inch bungee straps. Each includes bungee hooks on either end. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.